US5905469A - Windowpane antenna installation - Google Patents

Windowpane antenna installation Download PDF

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Publication number
US5905469A
US5905469A US08/794,898 US79489897A US5905469A US 5905469 A US5905469 A US 5905469A US 79489897 A US79489897 A US 79489897A US 5905469 A US5905469 A US 5905469A
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US
United States
Prior art keywords
antenna
windowpane
connection point
conductor
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/794,898
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English (en)
Inventor
Heinz Lindenmeier
Andreas Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Delco Electronics Europe GmbH
Original Assignee
Fuba Automotive GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuba Automotive GmbH and Co KG filed Critical Fuba Automotive GmbH and Co KG
Assigned to FUBA AUTOMOTIVE GMBH reassignment FUBA AUTOMOTIVE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUCHS, ANDREAS, LINDENMEIER, HEINZ
Application granted granted Critical
Publication of US5905469A publication Critical patent/US5905469A/en
Assigned to DELPHI DELCO ELECTRONICS EUROPE GMBH reassignment DELPHI DELCO ELECTRONICS EUROPE GMBH MERGER (SEE DOCUMENT FOR DETAILS). Assignors: FUBA AUTOMOTIVE GMBH & CO. KG
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Definitions

  • the invention relates to a windowpane antenna for use in motor vehicles. More particularly, it relates to a windowpane antenna installation operating in the frequency range for the meter and decimeter wave bands and being used for ultra short-wave and long-wave, medium-wave and short-wave radio reception, as well as terrestrial television reception.
  • antenna conductors are printed onto the windowpane, or embedded in laminated glass.
  • the antenna conductor connection points are located on the edge of the windowpane and are installed in a conductive windowpane frame represented by the conductive body of the vehicle.
  • the antenna connection points are connected to an electrical unit via feed lines that are made as short as possible. The mass connection of the electrical unit is connected in the shortest possible way to the conductive frame of the rear windowpane.
  • the electrical unit which is frequently an antenna amplifier, is connected at its output to the HF-cable, which further transmits the signals to the receiver.
  • the electrical unit is mechanically fastened near the mass connection on the body of the vehicle. Frequently, the mass connection to the body of the vehicle is established via the installed connection as well.
  • This method of mounting the electrical unit on the body of the vehicle is both expensive and complex.
  • the method also requires fastening means such as bolts or holes for fastening the unit. It is much more economical and more advantageous for the production of motor vehicles if an electrical unit, designed as a miniaturized unit, is mounted on the edge of a windowpane. Sufficient space is available for the miniaturized unit within the zone of the black printing on the edge of the window.
  • it is generally necessary to connect the high-frequency impedance, which develops between the antenna conductor connection point and an adjacent HF-mass reference point, in a defined way in terms of high frequency to the input of the electrical unit.
  • Yet another object of the invention is to provide a windowpane antenna installation that overcomes the drawbacks of the prior art and is inexpensive and simple to manufacture.
  • an antenna installation having an antenna conductor disposed on the windowpane, an antenna conductor connection point located near the window frame and within the zone of the windowpane adhesive, which acts as a dielectric, and an electrical unit mounted on the windowpane.
  • the electrical unit has a first input contact, a second input contact and a plurality of output contacts. The first input contact is connected to the antenna conductor connection point.
  • the installation includes a receiving and transmitting unit, and an HF-cable connected to the output contacts of the electrical unit at one end and to the receiving and transmitting unit at the other end.
  • the invention also includes a low-resistance flat capacitive element having a conductive surface located within the zone of the HF mass reference point and extending along the edge of the windowpane within the windowpane adhesive. The capacitive element is spaced a small distance away from and is electrically separated from the antenna conductor connection, and connects the second input contact to the HF mass reference point.
  • Such an antenna has the special advantage that electrical unit can be electrically and mechanically connected with the HF-cable, and can be incorporated into the vehicle as a unit that is mechanically detached from the body of the vehicle. This makes it possible to mechanically join the electrical unit with the HF-cable to the windowpane, and to glue the windowpane into the metallically conductive frame when the vehicle is manufactured. Then the HF-cable can be installed in the vehicle between the receiver and the transmitter. The electrical connection required when using active construction elements in the electrical unit can then be established at any desired site in the vehicle that is suitable for such a connection between the shielded conductor of the coaxial HF-cable, and the mass of the vehicle.
  • FIG. 1 shows a prior art antenna with an antenna amplifier denoted by a mass connection to the body of the vehicle;
  • FIG. 2a shows the antenna installation according to the invention
  • FIG. 2b shows a receiving antenna installation according to the invention
  • FIG. 3 shows a long-/medium-/short-wave and ultra-short wave receiving antenna installation according to the invention
  • FIG. 4 shows the mechanical/electrical structure of the electrical unit of the antenna according to FIG. 3;
  • FIG. 5a shows the design of the flat capacitive element comprising of the conductive surface disposed on the windowpane, the pane adhesive and the conductive window frame;
  • FIG. 5b shows the shape of the conductive area and the preferred connection point for the second input contact in the center of the area.
  • FIG. 5c shows a meander shaped design of the conductive area with the connection point for the second input contact at one end and with no load at the other end.
  • FIG. 6 shows the antenna installation according to the invention with a heatable rear windowpane and separately fed heating current and separate power supply feed for the antenna amplifier;
  • FIG. 7a shows an alternative embodiment of the antenna according to FIG. 6;
  • FIG. 7b shows an alternative embodiment of the antenna according to FIG. 7a.
  • FIG. 8 shows an alternative embodiment of the antenna according to FIG. 2b.
  • a windowpane 1 having conductors 2 coupled to a bus bar 24 on one side.
  • a second conductor 3 is provided and includes a conductor connection point 4.
  • An antenna amplifier 23 has a first input 5 coupled to the antenna conductor connection point 4 which feeds an amplifier 6 within amplifier 23.
  • Antenna amplifier 23 is connected to the vehicle mass as a point 22.
  • a signal device 13 is connected to antenna conductor connection point 19 on bus bar 24. The outputs of amplifier 6 and signal device 13 are fed into frequency switch 11, and then fed to output 12 for transmission to a receiver.
  • a heating system 28 is coupled to bus bar 24 via connection point 26.
  • FIG. 2a shows a schematic diagram of the antenna according to the invention.
  • the high-frequency mass connection for electrical unit 45 and its second input contact 36 is made using a flat capacitive element 35.
  • the invention shown in FIG. 2a therefore solves the problem of creating a sufficiently low-resistance, high-frequency connection between HF-mass reference point 34, which is present on the conductive rear windowpane frame 46, and second input contact 36. According to the invention, this is accomplished using the exemplified embodiments of conductive surface 49 of flat element 35 as shown in FIGS. 5a to 5c.
  • the high-frequency connection can be designed to be of very low impedance.
  • conductive surface 49 can be produced with a length 53 of 5-7 cm and with a width 54 of about 1 cm.
  • Second input contact 36 can be provided at any desired point on this surface. If a particularly low impedance capacitive connection is desired, conductive surface 49 can be designed as a conduction resonance structure and length 53, for example, can be selectively adjusted until it has an electrically active length of a quarter wavelength jointly with conductive windowpane frame 46.
  • the connection point for second input contact 36 is selected on HF-transmission unit 23 at one end of the surface.
  • a meander structure can be selected as shown in FIG. 5c. This embodiment, with no load at one end, provides for a resonance short circuit at its other end, where second input contact 36 is connected. The required band width of the resonance can be adjusted across the width of the selected meander lines.
  • FIG. 3 shows an example of an active receiving antenna for the long-/medium-/short-wave range.
  • Electrical unit 45 contains an HF-transmission unit 23 with a long-/medium-/short-wave amplifier 6 and an ultra-short wave amplifier.
  • the heating current feed from heating system 50 takes place at any desired point 26 on bus-bar 24 via high resistance inductor or coil 37.
  • the direct-current feed for the amplifier takes place via a direct-current (DC) source in receiver 42 and via the inside and outside conductors of the cable 41.
  • Electrical unit receives DC supply via positive and negative terminal connection points 44 and 43, respectively.
  • DC direct-current
  • FIG. 3 shows a second signal path 6 through HF-transmission unit 23.
  • Second signal path 6 has an input contact 5 that is directly connected to a second antenna connection point 4 which is coupled to additional antenna conductors 3. The output of second signal path is through output contact 12.
  • Second signal path 6 provides a signal path for the low frequency signals that are either not received or are filtered from the high frequency path designated by input contacts 33, 36 and output contacts 12, 38.
  • FIG. 4 shows the mechanical/electrical structure of an antenna according to the invention, with a design for long/medium-/short-wave and ultra-short wave similar to the one in FIG. 3.
  • electrical unit 45 has disconnectable pressure contacts for connecting HF-mass reference point 34 and second input contact 36, as well as connecting antenna conductor connection point 19 and first input contact 33.
  • HF-cable 41 is both electrically and mechanically connected with electrical unit 45.
  • the electrical unit 45 can be mounted on window 1 by simply pressing it onto the window surface. The mechanical securing takes place via the pressure contacts as well. Similar to the method shown in FIG.
  • the heating current feed takes place via high resistance inductor 37, which is interconnected between conductive surface 49 and an adjacent point on bus-bar 24 of the rear windowpane heater.
  • high resistance inductor 37 thus can be incorporated by soldering when the glass is manufactured.
  • the heating current supply from the DC supply 39 can take place via the feed line, which is separately soldered to conductive surface 49.
  • the feed line od DC supply 39, as well as the shielded conductor of coaxial HF-cable 41 are, with respect to high frequency, disposed parallel with flat capacitive element 35 toward the body of the vehicle.
  • the high-frequency shunt due to the inductance of the conductor, is ineffective if the capacitance value formed by conductive surface 49 toward conductive window frame 46 is designed to be of sufficiently low resistance. In the higher-frequency ultra-short wave range, this is easily achievable by the design of conductive surface 49.
  • second input contact 36 of electrical unit 45 locates its HF-mass reference point 34 in the desired site on conductive window frame 46. This is not necessarily true in the low-frequency long-/medium-/short-wave ranges.
  • the capacitive antenna conductors supply a receiving voltage versus the body of the vehicle, whereby the mass point can be defined to have low losses because of the larger wavelengths in these ranges.
  • the high-frequency shunt can be made ineffective in a further embodiment of the invention by adding ferrite material (e.g. punched core material) around the outer conductor of HF-cable 41 and around the line for feeding the heating current.
  • FIG. 2b shows an advantageous variation of an antenna, formed by the heating conductors, as it is shown in the ultra-short wave part in FIG. 4.
  • the feed of the heating current takes place as described in connection with FIG. 4.
  • capacitor 40 is switched between the positive direct-current connection (plus) 44 and second output contact 38.
  • interference pulses or noise of lower frequency can be filtered out in this way. This is important especially when the antenna is designed as a long-/medium-/short-wave antenna similar to the one shown in FIGS. 3 and 4.
  • the heating direct-current from DC supply 39 is fed via the high-resistance inductor 37 of bus-bar 24.
  • the DC supply for electrical unit 45 takes place separately on positive terminal 44 via a line which can be installed parallel with the HF-cable 41. Screening or filtering of the voltage can take place via capacitor 40.
  • FIG. 7a shows an antenna similar to the one in FIG. 6.
  • the feed of direct current for the amplifier is obtained from the DC voltage potential of bus-bar 24 applied to first input contact 33, and fed to the amplifier via positive terminal 44 of HF-transmission unit 23 and inductor 48.
  • FIG. 7b shows another variation for feeding the amplifier direct current via the internal conductor of HF-cable 41 and a DC source 39, which is provided in the receiver.
  • FIG. 7b shows the same direct-current feed of the amplifier as shown in FIG. 7a, however, via coaxial HF cable 41.
  • FIG. 8 shows an antenna as the one described in connection with FIG. 2b. However, the direct current is fed via coaxial HF-cable 41 as described in connection with FIG. 7b.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
US08/794,898 1996-04-01 1997-02-05 Windowpane antenna installation Expired - Lifetime US5905469A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19612958A DE19612958A1 (de) 1996-04-01 1996-04-01 Antennenverstärker auf einer Fensterscheibe
DE19612958 1996-04-01

Publications (1)

Publication Number Publication Date
US5905469A true US5905469A (en) 1999-05-18

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Family Applications (1)

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US08/794,898 Expired - Lifetime US5905469A (en) 1996-04-01 1997-02-05 Windowpane antenna installation

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US (1) US5905469A (es)
EP (1) EP0800228B1 (es)
DE (2) DE19612958A1 (es)
ES (1) ES2184828T3 (es)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6329928B1 (en) * 1998-12-21 2001-12-11 General Electric Company Magnetic induction meter intra-building communication system
US6448935B2 (en) 2000-02-11 2002-09-10 Ppg Industries Ohio, Inc. Vehicle antenna
KR20030006362A (ko) * 2001-07-12 2003-01-23 현대자동차주식회사 차량용 윈도우 글래스 안테나의 와이어 연결구조
US6603435B2 (en) * 2001-03-26 2003-08-05 Fuba Automotive Gmbh & Co. Kg Active broad-band reception antenna
WO2003077362A1 (de) * 2002-03-14 2003-09-18 Kathrein-Werke Kg Diversity-antennensystem für bewegte fahrzeuge
US20040113854A1 (en) * 2002-10-01 2004-06-17 Heinz Lindenmeier Active broad-band reception antenna with reception level regulation
US20040178961A1 (en) * 2001-06-20 2004-09-16 Helmut Maeuser Antenna window with a high-frequency component
EP1617505A1 (de) * 2004-07-17 2006-01-18 Hirschmann Electronics GmbH Kabelsatz, insbesondere für die Anwendung in einem Fahrzeug
US20070058761A1 (en) * 2005-09-12 2007-03-15 Fuba Automotive Gmbh & Co. Kg Antenna diversity system for radio reception for motor vehicles
US20080260079A1 (en) * 2007-04-13 2008-10-23 Delphi Delco Electronics Europe Gmbh Reception system having a switching arrangement for suppressing change-over interference in the case of antenna diversity
US20090036074A1 (en) * 2007-08-01 2009-02-05 Delphi Delco Electronics Europe Gmbh Antenna diversity system having two antennas for radio reception in vehicles
US20090042529A1 (en) * 2007-07-10 2009-02-12 Delphi Delco Electronics Europe Gmbh Antenna diversity system for relatively broadband broadcast reception in vehicles
US20090073072A1 (en) * 2007-09-06 2009-03-19 Delphi Delco Electronics Europe Gmbh Antenna for satellite reception
US20100183095A1 (en) * 2009-01-19 2010-07-22 Delphi Delco Electronics Europe Gmbh Reception system for summation of phased antenna signals
US20100253587A1 (en) * 2009-03-03 2010-10-07 Delphi Delco Electronics Europe Gmbh Antenna for reception of satellite radio signals emitted circularly, in a direction of rotation of the polarization
US20100302112A1 (en) * 2009-05-30 2010-12-02 Delphi Delco Electronics Europe Gmbh Antenna for circular polarization, having a conductive base surface
WO2024044047A1 (en) 2022-08-25 2024-02-29 Eastman Kodak Company Heated planar antenna

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DE19925127C1 (de) * 1999-06-02 2000-11-02 Daimler Chrysler Ag Antennenanordnung in Kraftfahrzeugen
DE10019540B4 (de) * 2000-04-20 2007-04-19 Leopold Kostal Gmbh & Co. Kg Elektrische Einrichtung für ein Kraftfahrzeug
DE102012010694A1 (de) * 2012-05-30 2012-11-08 Daimler Ag Antennenanordnung für ein Fahrzeug und Fahrzeug mit zumindest einer solchen Antennenanordnung
DE102014211091A1 (de) * 2014-06-11 2015-12-17 Continental Automotive Gmbh Antennenanordnung in einem Fahrzeug

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DE3410415A1 (de) * 1984-03-21 1985-09-26 Gerhard Prof. Dr.-Ing. 8012 Ottobrunn Flachenecker Aktive antenne in der heckscheibe eines kraftfahrzeugs
DE3618452A1 (de) * 1986-06-02 1987-12-03 Lindenmeier Heinz Diversity-antennen unter benutzung des heizfeldes in fahrzeugheckscheiben
US5029308A (en) * 1988-06-14 1991-07-02 Hans Kolbe & Co. Nachrichtenubertragungstechnik Unipolar antenna with conductive frame
US5083134A (en) * 1988-07-14 1992-01-21 Asahi Glass Company Ltd. Antenna device for an automobile

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Publication number Priority date Publication date Assignee Title
EP0124055A2 (de) * 1983-04-28 1984-11-07 FUBA Automotive GmbH Aktive Windschutzscheibenantenne für alle Polarisationsarten
DE3410415A1 (de) * 1984-03-21 1985-09-26 Gerhard Prof. Dr.-Ing. 8012 Ottobrunn Flachenecker Aktive antenne in der heckscheibe eines kraftfahrzeugs
DE3618452A1 (de) * 1986-06-02 1987-12-03 Lindenmeier Heinz Diversity-antennen unter benutzung des heizfeldes in fahrzeugheckscheiben
US4914446A (en) * 1986-06-02 1990-04-03 Heinz Lindenmeier Diversity antenna system
US5029308A (en) * 1988-06-14 1991-07-02 Hans Kolbe & Co. Nachrichtenubertragungstechnik Unipolar antenna with conductive frame
US5083134A (en) * 1988-07-14 1992-01-21 Asahi Glass Company Ltd. Antenna device for an automobile

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6329928B1 (en) * 1998-12-21 2001-12-11 General Electric Company Magnetic induction meter intra-building communication system
US6448935B2 (en) 2000-02-11 2002-09-10 Ppg Industries Ohio, Inc. Vehicle antenna
US6603435B2 (en) * 2001-03-26 2003-08-05 Fuba Automotive Gmbh & Co. Kg Active broad-band reception antenna
US7123202B2 (en) * 2001-06-20 2006-10-17 Saint-Gobain Glass France Antenna window with high-frequency component
US20040178961A1 (en) * 2001-06-20 2004-09-16 Helmut Maeuser Antenna window with a high-frequency component
KR20030006362A (ko) * 2001-07-12 2003-01-23 현대자동차주식회사 차량용 윈도우 글래스 안테나의 와이어 연결구조
WO2003077362A1 (de) * 2002-03-14 2003-09-18 Kathrein-Werke Kg Diversity-antennensystem für bewegte fahrzeuge
US20040070544A1 (en) * 2002-03-14 2004-04-15 Prassmayer Peter Karl Diversity-antenna system for moving vehicles
CN1323463C (zh) * 2002-03-14 2007-06-27 凯瑟雷恩工厂两合公司 用于移动车辆的分集天线系统
US6867739B2 (en) 2002-03-14 2005-03-15 Kathrein-Werke Kg Diversity-antenna system for moving vehicles
US20040113854A1 (en) * 2002-10-01 2004-06-17 Heinz Lindenmeier Active broad-band reception antenna with reception level regulation
US6888508B2 (en) * 2002-10-01 2005-05-03 Fuba Automotive Gmbh & Co. Kg Active broad-band reception antenna with reception level regulation
EP1617505A1 (de) * 2004-07-17 2006-01-18 Hirschmann Electronics GmbH Kabelsatz, insbesondere für die Anwendung in einem Fahrzeug
US7936852B2 (en) 2005-09-12 2011-05-03 Delphi Delco Electronics Europe Gmbh Antenna diversity system for radio reception for motor vehicles
US20070058761A1 (en) * 2005-09-12 2007-03-15 Fuba Automotive Gmbh & Co. Kg Antenna diversity system for radio reception for motor vehicles
US8107557B2 (en) 2007-04-13 2012-01-31 Delphi Delco Electronics Europe Gmbh Reception system having a switching arrangement for suppressing change-over interference in the case of antenna diversity
US20080260079A1 (en) * 2007-04-13 2008-10-23 Delphi Delco Electronics Europe Gmbh Reception system having a switching arrangement for suppressing change-over interference in the case of antenna diversity
US20090042529A1 (en) * 2007-07-10 2009-02-12 Delphi Delco Electronics Europe Gmbh Antenna diversity system for relatively broadband broadcast reception in vehicles
US8422976B2 (en) 2007-07-10 2013-04-16 Delphi Delco Electronics Europe Gmbh Antenna diversity system for relatively broadband broadcast reception in vehicles
US20090036074A1 (en) * 2007-08-01 2009-02-05 Delphi Delco Electronics Europe Gmbh Antenna diversity system having two antennas for radio reception in vehicles
US8270924B2 (en) 2007-08-01 2012-09-18 Delphi Delco Electronics Europe Gmbh Antenna diversity system having two antennas for radio reception in vehicles
US20090073072A1 (en) * 2007-09-06 2009-03-19 Delphi Delco Electronics Europe Gmbh Antenna for satellite reception
US7936309B2 (en) 2007-09-06 2011-05-03 Delphi Delco Electronics Europe Gmbh Antenna for satellite reception
US20100183095A1 (en) * 2009-01-19 2010-07-22 Delphi Delco Electronics Europe Gmbh Reception system for summation of phased antenna signals
US8306168B2 (en) 2009-01-19 2012-11-06 Delphi Delco Electronics Europe Gmbh Reception system for summation of phased antenna signals
US20100253587A1 (en) * 2009-03-03 2010-10-07 Delphi Delco Electronics Europe Gmbh Antenna for reception of satellite radio signals emitted circularly, in a direction of rotation of the polarization
US8537063B2 (en) 2009-03-03 2013-09-17 Delphi Delco Electronics Europe Gmbh Antenna for reception of satellite radio signals emitted circularly, in a direction of rotation of the polarization
US20100302112A1 (en) * 2009-05-30 2010-12-02 Delphi Delco Electronics Europe Gmbh Antenna for circular polarization, having a conductive base surface
US8334814B2 (en) 2009-05-30 2012-12-18 Delphi Delco Electronics Europe Gmbh Antenna for circular polarization, having a conductive base surface
WO2024044047A1 (en) 2022-08-25 2024-02-29 Eastman Kodak Company Heated planar antenna

Also Published As

Publication number Publication date
DE19612958A1 (de) 1997-10-02
EP0800228A1 (de) 1997-10-08
DE59609752D1 (de) 2002-11-07
EP0800228B1 (de) 2002-10-02
ES2184828T3 (es) 2003-04-16

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